docs: def disk_usage(path):
      """Return free usage about the given path, in bytes.
  
      Parameters
      ----------
      path : str
          Folder for which to return disk usage
  
      Returns
      -------
      output : tuple
          Tuple containing total space in the folder and currently
          used space in the folder
  
      """
      st = os.statvfs(path)
      total = st.f_blocks * st.f_frsize
      used = (st.f_blocks - st.f_bfree) * st.f_frsize
      return total, used